Product Overview
The YDM403D integrates precise measurement, data communication, and robust display capabilities in one device. It measures essential electrical parameters in three-phase AC systems—voltage, current, active/reactive/apparent power, energy (kWh), power factor, frequency, etc.
This meter is built for modern energy systems and fits into EV charging stations, energy management platforms, industrial panels, and IoT infrastructures.
| Product Name | YADA YDM403D AC Energy Meter | |||
| Meter Type | 3 Phase Energy Meter | |||
| Model No. | YDM403D | |||
| Brand Name | YADA | |||
| Display Type | LCD Display | |||
| Measuring Energy Range | 0-99999.99kWh | |||
| Phase | Three Phase | |||
| Accuracy Class | Class A/B | |||
| Operating Temperature | -25℃~ 55℃ | |||
| Communication | RS-485 (dual line), isolated communication | |||
| ModBus-RTU and DL/T645-2007 Protocol | ||||
| Installation | 35mm DIN rail | |||
| Input current | 0.25-5(80)A | |||
| Input Voltage | 3×230V/400 V | |||
| Nominal Frequency | 50Hz /60Hz | |||
| Pulse constant | 400imp/kWh | |||
| Certificate | MID, CE Certificationl (EN62052-11; EN50470-3) | |||
| Warranty | 2 Years | |||
| Dimensions & Weight | 72.0mm*100mm*65.0mm, 0.338kg | |||
| Appication | AC EV Charging Station | |||
Key Features & Benefits
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High Accuracy & Reliability — Class 0.5 / 1.0 ensures dependable energy measurement for auditing and billing-level systems
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Wide Energy Display Range — Up to 999,999.99 kWh supports large-scale energy monitoring
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Dual-Line RS-485 Communication — Supports Modbus RTU and DL/T645, isolated channels for safe connectivity
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Flexible Current Inputs — 0.25–5(80)A input range allows compatibility with CTs and broader measurement scope
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LCD Display with Backlight — Clear visualization of parameters and status even in low light
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DIN-Rail Installation — Standard 35 mm mounting simplifies panel integration
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Compact & Durable Design — Robust casing, reliable in industrial environments
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Wide Operating Range — Designed to maintain performance from –25 °C to +55 °C
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Industry Certifications — MID, CE, EN / IEC standard compliance enhances credibility in export markets
Main Function
Wiring
Dimension & Installation
MID Certification
Applications
The YDM403D is ideal for:
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EV / electric vehicle charging stations (monitoring station power consumption)
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Industrial energy management systems
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Smart grid and IoT energy monitoring
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Panels and distribution boards in factories / commercial buildings
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Sub-metering in large facilities
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Renewable energy AB / BESS integration (for AC-side monitoring)
Why Choose YADA YDM403D?
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Modern, Export-ready Certifications — With MID and CE compliance, ready for EU and international markets
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Dual Communication Protocols — Covers common field protocols for interoperability
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Scalable & Flexible Input Range — Works with CTs for high current scenarios
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Reliable Display & User Interface — LCD with backlight enhances usability in real field environments
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Compact Mounting & Easy Deployment — DIN-rail form factor fits standard electrical cabinets
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Proven Manufacturer — YADA’s reputation and export experience strengthen trust
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2-Year Warranty & Support — Backed by service assurances for B2B clients
FAQ
Q: What current range is supported?
A: The meter supports 0.25 – 5(80) A input (i.e. with CT) as per specification.
Q: What communication protocols does it support?
A: It supports Modbus RTU and DL/T645-2007 over dual isolated RS-485 lines.
Q: What certifications does this model have?
A: It holds MID and CE certifications, complying with EN62052-11 and EN50470-3 standards.
Q: What is the operating temperature range?
A: –25 °C to +55 °C per seller listing.
Q: How is it mounted?
A: It is designed for 35 mm DIN-rail mounting.